The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2023
Filed:
Jul. 19, 2019
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Zhiqun Zhang, North Oaks, MN (US);
Edward Keith Willis, Goodlettsville, TN (US);
Jacob J. Thelen, Minneapolis, MN (US);
Daniel E. Johnson, Marine On St. Croix, MN (US);
Bryan L. Gerhardt, Woodbury, MN (US);
Michael R. Berrigan, Oakdale, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/52 (2006.01); B01D 39/16 (2006.01); B01D 46/00 (2022.01); D04H 3/033 (2012.01); D04H 3/16 (2006.01); D06C 15/02 (2006.01); D06C 15/08 (2006.01);
U.S. Cl.
CPC ...
B01D 39/1623 (2013.01); B01D 46/0001 (2013.01); B01D 46/0005 (2013.01); B01D 46/0032 (2013.01); B01D 46/521 (2013.01); D04H 3/033 (2013.01); D04H 3/16 (2013.01); D06C 15/02 (2013.01); D06C 15/08 (2013.01); B01D 2239/0208 (2013.01); B01D 2239/0435 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/0627 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1266 (2013.01); D10B 2505/04 (2013.01);
Abstract
A relofted, spunbonded nonwoven web exhibiting a solidity of from less than 8.0%, to at least 3.0%, and exhibiting a Quality Factor of at least 0.30. Methods of making a relofted web; and, methods of using a relofted web as an air-filtration web, e.g. as a filter media or a layer thereof.